Ali ibn Ahmad al-Nasawi
He flourished under the Buwayhid sultan Majd al-dowleh, who died in 1029-30AD, and under his successor.He wrote a book on arithmetic in Persian, and then Arabic, entitled the "Satisfying (or Convincing) on Hindu Calculation" (al-muqni fi-l-hisab al Hindi).He also wrote on Archimedes's Book of Lemmas and Menelaus's theorem (Kitab al-ishba, or "satiation"), where he made corrections to the Book of Lemmas as translated into Arabic by Thabit ibn Qurra and last revised by Nasir al-Din al-Tusi.His work was not original, and he sometimes writes of matters that he does not understand, e.g. "borrowing" in subtraction.[2] Ragep and Kennedy also give an analysis of a mid-12th-century manuscript in which a summary of Euclid's Elements exists by al-Nasawī.